bdffa92004
We called g_signal_connect("selection_get") in wxClipboard code each time its
AddData() method was called. This resulted in progressive but noticeable
slowdown as the handler was called more and more times.
Only connect to the handler once now.
Closes #15038.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73518 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
137 lines
4.0 KiB
C++
137 lines
4.0 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/gtk/clipbrd.h
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// Purpose: wxClipboard for wxGTK
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// Author: Robert Roebling, Vadim Zeitlin
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// Id: $Id$
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// Copyright: (c) 1998 Robert Roebling
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// (c) 2007 Vadim Zeitlin
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_GTK_CLIPBOARD_H_
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#define _WX_GTK_CLIPBOARD_H_
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// ----------------------------------------------------------------------------
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// wxClipboard
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// ----------------------------------------------------------------------------
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#include "wx/weakref.h"
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class WXDLLIMPEXP_CORE wxClipboard : public wxClipboardBase
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{
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public:
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// there are several clipboards in X11 (and in GDK)
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enum Kind
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{
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Primary,
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Clipboard
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};
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wxClipboard();
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virtual ~wxClipboard();
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// open the clipboard before SetData() and GetData()
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virtual bool Open();
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// close the clipboard after SetData() and GetData()
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virtual void Close();
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// query whether the clipboard is opened
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virtual bool IsOpened() const;
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// set the clipboard data. all other formats will be deleted.
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virtual bool SetData( wxDataObject *data );
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// add to the clipboard data.
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virtual bool AddData( wxDataObject *data );
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// ask if data in correct format is available
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virtual bool IsSupported( const wxDataFormat& format );
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// ask if data in correct format is available
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virtual bool IsSupportedAsync( wxEvtHandler *sink );
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// fill data with data on the clipboard (if available)
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virtual bool GetData( wxDataObject& data );
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// clears wxTheClipboard and the system's clipboard if possible
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virtual void Clear();
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// implementation from now on
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// --------------------------
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// get our clipboard item (depending on m_usePrimary value)
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GdkAtom GTKGetClipboardAtom() const;
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// get the data object currently being requested
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wxDataObject *GTKGetDataObject( GdkAtom atom );
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// clear the data for the given clipboard kind
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void GTKClearData(Kind kind);
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// called when selection data is received
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void GTKOnSelectionReceived(const GtkSelectionData& sel);
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// called when available target information is received
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bool GTKOnTargetReceived(const wxDataFormat& format);
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private:
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// the data object for the specific selection
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wxDataObject *& Data(Kind kind)
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{
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return kind == Primary ? m_dataPrimary : m_dataClipboard;
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}
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// the data object we're currently using
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wxDataObject *& Data()
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{
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return Data(m_usePrimary ? Primary : Clipboard);
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}
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// set or unset selection ownership
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bool SetSelectionOwner(bool set = true);
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// add atom to the list of supported targets
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void AddSupportedTarget(GdkAtom atom);
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// check if the given format is supported
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bool DoIsSupported(const wxDataFormat& format);
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// both of these pointers can be non-NULL simultaneously but we only use
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// one of them at any moment depending on m_usePrimary value, use Data()
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// (from inside) or GTKGetDataObject() (from outside) accessors
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wxDataObject *m_dataPrimary,
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*m_dataClipboard;
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// this is used to temporarily hold the object passed to our GetData() so
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// that GTK callbacks could access it
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wxDataObject *m_receivedData;
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// used to pass information about the format we need from DoIsSupported()
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// to GTKOnTargetReceived()
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GdkAtom m_targetRequested;
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GtkWidget *m_clipboardWidget; // for getting and offering data
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GtkWidget *m_targetsWidget; // for getting list of supported formats
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// ID of the connection to "selection_get" signal, initially 0.
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unsigned long m_idSelectionGetHandler;
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bool m_open;
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bool m_formatSupported;
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public:
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// async stuff
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wxEvtHandlerRef m_sink;
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private:
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GtkWidget *m_targetsWidgetAsync; // for getting list of supported formats
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DECLARE_DYNAMIC_CLASS(wxClipboard)
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};
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#endif // _WX_GTK_CLIPBOARD_H_
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